Find the validity of the equation. S=ut + at²/2

5

Explanation:

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Explanation:

s = ut + ½ at²

So far we have the equations: v = u + at and s = ½ (u+v) t

the second can be useful for finding displacement. However, if we don't know the final velocity, it's useless. We could first work out v from "v = u + at". But let's be radical and substitute "v = u + at" into the second equation!

s = ½ (u + v) × t

s = ½ (u + u + at) × t

s = ut + ½ at². A third equation, useful for finding displacement when you know the initial velocity, time and acceleration.

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